The Plum Tart Gladiolus Bouquet, 'Gladiolus', is a stunning combination of purple and white gladiolus. Gladiolus are excellent for cuttings and borders. Their sword-like foliage and tall, impressive flower spikes, make striking accents in the mixed flower border. Glads are easy to grow, requiring only full sun and good drainage. They are hardy in zones 8-11; elsewhere treat as an annual, or dig them in the fall and store over winter.